weird sound

Has anyone ever noticed how when our cars come to a stop ( automatic, GT), that you hear a growling sound from the exhaust headers? Its only at idle when the car is cold and the idle revs are high. The noise sounds gurgly( the car has to be in drive to hear it). Its most noticable if you brake torque the car........my other question is, can we install a new header setup to get rid of the sound?

hehe i dont' mess with autos but i'd imagine a nice set of headers would cure it.

havent you already asked this question...